System and method for high-frequency amplifier
A system and method for operating an amplifier system is provided. The amplifier system includes an input providing a direct coupling configured to receive a high-frequency input signal having a frequency in at least one of a radiofrequency (RF) and microwave range. The amplifier system also includes an amplifier including a dielectric material separating at least two superconducting layers forming an amplifier loop configured to receive the high-frequency input signal and deliver an amplified signal. The amplifier system includes an output providing a direct coupling configured to deliver the amplified signal.
1. A linear amplifier system configured to amplify high-frequency signals, the amplifier comprising:
an input providing a direct coupling configured to receive a high-frequency input signal having a frequency in at least one of a radiofrequency (RF) and microwave range;
an amplifier including a dielectric material separating at least two superconducting layers forming an amplifier loop configured to receive the high-frequency input signal and deliver an amplified signal, the amplifier presenting an inductive short to ground at the input, and the amplified signal being a linear amplification of the high-frequency input signal; and
an output providing a direct coupling configured to deliver the amplified signal.
2. The linear amplifier system of claim 1 wherein the amplifier forms a superconducting low-inductance undulatory galvanometer (SLUG) architecture.
3. The linear amplifier system of claim 2 wherein the SLUG architecture is arranged as a symmetric SLUG.
4. The linear amplifier system of claim 1 wherein the amplifier is configured to present a complex input impedance that is frequency dependent.
5. The linear amplifier system of claim 1 wherein the input includes a tapered transmission line matching section configured to increase a bandwidth of the amplifier system without degrading a gain of the amplifier system.
6. The linear amplifier system of claim 1 wherein the input includes an input transformer having stepped transmission line impedances selected to increase a bandwidth of the amplifier system without degrading a gain of the amplifier system.
7. The linear amplifier system of claim 1 wherein the input is configured to directly couple to a transmission line impedance.
8. The linear amplifier system of claim 1 wherein the input includes a thin-film microstrip connected to a transmission line output.
9. The linear amplifier system of claim 1 wherein at least one of the input and the output is configured to be coupled to a transmission line environment.
10. The linear amplifier system of claim 9 wherein the transmission line environment includes a 50 ohm environment.
11. The linear amplifier system of claim 1 wherein the amplifier is configured to operate as a phase-insensitive linear amplifier.
12. A quantum information processing network configured to receive and relay high-frequency signals, the quantum information processing network comprising:
a signal source configured to act as at least one of a quantum computing source, a source of qubits, and a linear cavity resonator and at least one of transmitting and reflecting a high-frequency signal having a frequency in at least one of a radiofrequency (RF) and microwave range;
a transmission line network configured to have an approximately 50 ohm environment and configured to receive the high-frequency signal; and
an amplifier coupled directly to the transmission line network through an input configured to receive the high-frequency signal and an output to deliver an amplified high-frequency signal, the amplifier being configured to present at least one of an inductive short to ground at the input, and the amplified high-frequency signal being a linear amplification of the hiqh-frequency signal.
13. The quantum information processing network of claim 12 wherein the amplifier includes a dielectric material separating at least two superconducting layers forming an amplifier loop configured to receive the high-frequency signal and deliver the amplified high-frequency signal.
14. The quantum information processing network of claim 12 wherein the amplifier is arranged in a superconducting low-inductance undulatory galvanometer (SLUG) architecture.
15. The quantum information processing network of claim 14 wherein the SLUG architecture forms a symmetric SLUG architecture.
16. The quantum information processing network of claim 12 wherein the transmission line network includes a tapered transmission line matching section coupled to the input of the amplifier configured to increase a bandwidth of the amplifier without degrading a gain of the amplifier.
17. The quantum information processing network of claim 12 wherein the input includes an input transformer having stepped transmission line impedances selected to increase a bandwidth of the amplifier without degrading a gain of the amplifier.
18. The quantum information processing network of claim 12 wherein the amplifier is configured to operate as a phase-insensitive linear amplifier.